NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

10 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 217
ONVOY, LLC 3
NEW CINGULAR WIRELESS PCS, LLC - IL 3
EXIANT COMMUNICATIONS LLC 3
OPENTACT INC. 1
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2018-10-19 217-926-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARCOLA IL
2018-10-19 217-926-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARCOLA IL
2018-10-19 217-926-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARCOLA IL
2018-10-17 217-601-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GEORGETOWN IL
2018-10-03 217-364-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E BUFFALO IL
2018-09-14 217-850-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2018-09-12 217-699-3XXX 3000–3999Assigned ONVOY, LLC 224C BEMENT IL
2018-09-07 217-288-2XXX 2000–2999Assigned ONVOY, LLC 224C SIDELL IL
2018-09-07 217-387-3XXX 3000–3999Assigned ONVOY, LLC 224C THAWVILLE IL
2018-09-07 217-485-4XXX 4000–4999Assigned ONVOY, LLC 224C TOLONO IL
2018-09-07 217-500-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 EFFINGHAM IL
2018-09-07 217-583-8XXX 8000–8999Assigned ONVOY, LLC 224C ROYAL IL
2018-09-07 217-598-8XXX 8000–8999Assigned ONVOY, LLC 224C SADORUS IL
2018-09-07 217-599-5XXX 5000–5999Assigned ONVOY, LLC 224C TUSCOLA IL
2018-09-07 217-643-4XXX 4000–4999Assigned ONVOY, LLC 224C THOMASBORO IL
2018-09-07 217-681-6XXX 6000–6999Assigned ONVOY, LLC 224C VILLAGROVE IL
2018-09-07 217-687-8XXX 8000–8999Assigned ONVOY, LLC 224C SEYMOUR IL
2018-09-07 217-688-5XXX 5000–5999Assigned ONVOY, LLC 224C SIDNEY IL
2018-09-07 217-745-5XXX 5000–5999Assigned ONVOY, LLC 224C SIBLEY IL
2018-09-07 217-748-7XXX 7000–7999Assigned ONVOY, LLC 224C ROSSVILLE IL
2018-09-06 217-282-2XXX 2000–2999Assigned ONVOY, LLC 224C RANTOUL IL
2018-09-06 217-286-6XXX 6000–6999Assigned ONVOY, LLC 224C HENNING IL
2018-09-06 217-339-3XXX 3000–3999Assigned ONVOY, LLC 224C CHENEYVL IL
2018-09-06 217-375-5XXX 5000–5999Assigned ONVOY, LLC 224C EAST LYNN IL
2018-09-06 217-386-6XXX 6000–6999Assigned ONVOY, LLC 224C LODA IL
2018-09-06 217-388-5XXX 5000–5999Assigned ONVOY, LLC 224C MELVIN IL
2018-09-06 217-396-2XXX 2000–2999Assigned ONVOY, LLC 224C LUDLOW IL
2018-09-06 217-489-3XXX 3000–3999Assigned ONVOY, LLC 224C MANSFIELD IL
2018-09-06 217-564-6XXX 6000–6999Assigned ONVOY, LLC 224C IVESDALE IL
2018-09-06 217-568-9XXX 9000–9999Assigned ONVOY, LLC 224C GIFFORD IL
2018-09-06 217-582-5XXX 5000–5999Assigned ONVOY, LLC 224C OGDEN IL
2018-09-06 217-586-9XXX 9000–9999Assigned ONVOY, LLC 224C MAHOMET IL
2018-09-06 217-595-2XXX 2000–2999Assigned ONVOY, LLC 224C PENFIELD IL
2018-09-06 217-684-4XXX 4000–4999Assigned ONVOY, LLC 224C PHILO IL
2018-09-06 217-749-4XXX 4000–4999Assigned ONVOY, LLC 224C ELLIOTT IL
2018-09-06 217-765-5XXX 5000–5999Assigned ONVOY, LLC 224C ALVIN IL
2018-09-06 217-769-6XXX 6000–6999Assigned ONVOY, LLC 224C HOOPESTON IL
2018-09-06 217-776-6XXX 6000–6999Assigned ONVOY, LLC 224C COLLISON IL
2018-09-06 217-817-7XXX 7000–7999Assigned ONVOY, LLC 224C MONTICELLO IL
2018-09-06 217-834-4XXX 4000–4999Assigned ONVOY, LLC 224C BROADLANDS IL
2018-09-06 217-837-3XXX 3000–3999Assigned ONVOY, LLC 224C NEWMAN IL
2018-09-06 217-846-4XXX 4000–4999Assigned ONVOY, LLC 224C FOOSLAND IL
2018-09-06 217-863-4XXX 4000–4999Assigned ONVOY, LLC 224C BONDVILLE IL
2018-09-06 217-867-8XXX 8000–8999Assigned ONVOY, LLC 224C PESOTUM IL
2018-09-06 217-896-9XXX 9000–9999Assigned ONVOY, LLC 224C HOMER IL
2018-09-06 217-897-9XXX 9000–9999Assigned ONVOY, LLC 224C FISHER IL
2018-08-29 217-921-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PARIS IL
2018-08-23 217-471-3XXX 3000–3999Assigned ONVOY, LLC 224C ROCHESTER IL
2018-08-23 217-680-2XXX 2000–2999Assigned ONVOY, LLC 224C GIBSONCITY IL
2018-08-13 217-208-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHARLESTON IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.